Fehling's solution (redirected from Fehling's test)

Feh·ling's solution (flngz)

n.

An aqueous solution of copper sulfate, sodium hydroxide, and potassium sodium tartrate used to test for the presence of sugars and aldehydes in a substance, such as urine.

---

Fehling's solution

a solution used in clinical pathology as a test for glucose in solutions such as urine. (1) 34.66 g cupric sulfate in water to make 500 ml; (2) 173 g crystallized potassium and sodium tartrate and 50 g sodium hydroxide in water to make 500 ml; mix equal volumes of (1) and (2) at time of use.